NEED HELP WILL GIVE BRAINLIEST!!
Francis has recently started an advertising campaign that includes numerous advertisements across various media formats. Since the campaign began,
sales are up 20%. He wants to increase his investment in the advertisements that have been most effective, but he doesn't know which ones to do. What has he failed to include in his advertisement planning?
A. Determining his target audience
B. Planning his advertising budget
C. How to measure advertising effectiveness
D. Knowing what types of media formats are available